<div class="a-center" style="width:900px;">
  <h3>Import Lesson</h3>
  <form action="/admin/import_lesson" method="POST">
    <textarea name="json" style="width:100%; height:400px; border: 1px solid #ccc;"></textarea>
    <div class="a-right">
      <input type="submit">
    </div>
  </form>
</div>
